\begin{abstract}

 

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\center{
A technique utilizing object relational mapping tools 
and the Java Spring frame\-work how database structures 
can be refactored safely on a regular basis without 
changing existing program code on the domain layer of 
the Java application - that does not need change from 
a business view of perspective - is going to be shown.
Furthermore, due to its disadvantages we conclude why this approach can only be
suggested in projects with certain very specific requirements.}








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\end{abstract}